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我省安庆地震台利用屏蔽声波的方法,排除了飞机噪声及在一至三公里处的近炮声波对短周期测震仪记录的干扰,取得了较好的效果。台站附近几十至几百米的小型爆破(药量几至上百市斤)是否有地振动成分,对短周期测震仪记录的干扰因素主要是声波还是地振动?为弄清这些问题,我们做了以下试验。 在电雷管铜皮外壳上扎二根电线,通过直流电源作为信号,在电雷管引爆炸药的同时
Anqing Seismological Station of our province used the method of shielding sound waves to eliminate the interference of aircraft noise and near-gun sound waves at one to three kilometers to the record of short-period seismometers and achieved good results. Whether the small-scale seismograph recorded the main disturbing factors is sonic or ground vibration in order to find out whether the small-scale blasting (the dose is up to hundreds of kilograms) of the tens to hundreds of meters near the station? To clarify these problems, We did the following experiment. In the electric detonator copper shell shell on the two wires, through the DC power as a signal in the detonator detonated explosives at the same time